How many excess electrons are on the outer surface of shell

Reference no: EM13277581

A thin spherical copper shell of radius 9.5 cm carries an excess charge of -4.2 nC. How many excess electrons are on

(a) the outer surface of the shell, and

(b) the inner surface? (e = 1.60 x 10^-19 C)

Reference no: EM13277581

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